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Microchip Technology SST25VF032B-80-4I-QAE-T
- Part No.:
- SST25VF032B-80-4I-QAE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
SST25VF032B-80-4I-QAE-T.pdf
- Description:
- IC FLASH 32MBIT SPI 80MHZ 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,350
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Product details
Overview
SST25VF032B-80-4I-QAE-T from Microchip Technology is a 32 Mbit SPI serial flash memory IC with 2.7–3.6 V single-supply operation, 80 MHz high-speed read capability, and uniform 4 KByte/32 KByte/64 KByte erase granularity. It serves as non-volatile program/data storage in microcontroller-based embedded systems requiring fast boot code access and field-upgradable firmware.
For engineers reviewing the SST25VF032B-80-4I-QAE-T datasheet, SST25VF032B-80-4I-QAE-T pinout, SST25VF032B-80-4I-QAE-T application, or SST25VF032B-80-4I-QAE-T equivalent, key selection considerations include SPI Mode 0/3 compatibility, industrial temperature range (−40°C to +85°C), Auto Address Increment (AAI) programming support, hardware-ready/busy indication via SO pin, and software/hardware write protection architecture.
Technical Context
The SST25VF032B-80-4I-QAE-T implements a four-wire SPI interface (SCK, SI, SO, CE#) with dual-mode clock polarity support (Mode 0 and Mode 3), enabling interoperability with diverse host controllers. Its SuperFlash technology uses a split-gate cell and thick-oxide tunneling injector to achieve 100,000 program/erase cycles and >100 years data retention.
It supports three concurrent erase granularities-4 KByte sectors, 32 KByte blocks, and 64 KByte blocks-and features dual end-of-write detection: software polling of BUSY bit (RDSR) and hardware RY/BY# status output on SO during AAI programming (enabled via EBSY command 70H).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (4 MByte); sufficient for full bootloader + application firmware in resource-constrained MCU systems. |
| Max Clock Frequency | 80 MHz; enables high-throughput firmware reads (e.g., XIP or fast copy-to-RAM) without CPU bottleneck. |
| Erase Granularity | Uniform 4 KByte sectors, 32 KByte blocks, 64 KByte blocks; allows precise field updates without full chip erase. |
| Write Endurance | 100,000 cycles; supports frequent OTA firmware updates over product lifetime in industrial gateways. |
| Data Retention | >100 years at +85°C; ensures long-term reliability in unattended infrastructure equipment. |
| Supply Voltage | 2.7–3.6 V; compatible with 3.3 V logic rails and tolerant of brown-out conditions in battery-backed systems. |
| Operating Temp | −40°C to +85°C (Industrial grade); validated for deployment in outdoor telecom nodes and factory automation PLCs. |
Pinout & Package
Package: 8-contact WSON (5 mm × 6 mm, 0.5 mm pitch), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout instruction execution; deassertion terminates ongoing operation. |
| SO | Serial Data Output / RY/BY# (configurable) | Outputs read data or hardware-ready/busy status during AAI mode when enabled via EBSY (70H) command. |
| WP# | Write Protect | Enables lock-down of Block-Protection bits (BP3–BP0) in status register when driven low; prevents accidental reconfiguration. |
| HOLD# | Hold | Suspends SPI communication mid-sequence without resetting internal state; useful for interrupt-driven host systems. |
| SCK | Serial Clock | Provides timing for SPI transfers; supports both Mode 0 (idle low) and Mode 3 (idle high) for host flexibility. |
| SI | Serial Data Input | Accepts commands, addresses, and data; sampled on rising edge of SCK per SPI standard. |
| VDD | Power Supply | 2.7–3.6 V supply input; powers all internal logic and memory array; requires local decoupling per layout guidelines. |
| VSS | Ground | Reference return path for all signals and power; must be low-impedance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Auto Address Increment (AAI) Programming | Reduces total programming time by eliminating address retransmission for sequential word writes; critical for rapid firmware patching. |
| Hardware RY/BY# Status on SO Pin | Eliminates software polling overhead during AAI programming; enables deterministic timing for real-time host response. |
| Flexible Block Protection Scheme | Four BP bits (BP3–BP0) allow configurable protection of upper 1/64 to full memory array; supports secure bootloader partitioning. |
| High-Speed Read at 80 MHz | Supports up to 80 MHz clock with dummy cycle; delivers ~8 MB/s effective throughput for fast boot or streaming applications. |
| Low Active & Standby Current | 10 mA typical active read current and 5 µA typical standby current enable energy-efficient operation in always-on IoT endpoints. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing and executing boot firmware and configuration data in programmable logic controllers deployed in factory-floor environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Non-volatile code storage with fast read access for cold-start boot sequence and field-upgradable application logic. Use Value: 80 MHz high-speed read and −40°C to +85°C rating ensure reliable boot within 500 ms across operating conditions; 4 KByte sector erase enables incremental firmware patches without downtime. |
Use Scenario: Holding certified bootloader and safety-critical diagnostic firmware in portable ultrasound or infusion pump devices requiring regulatory-compliant data integrity. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for immutable boot code and versioned application images. Use Value: Software block protection (BP bits) and WP#-enabled lock-down prevent unauthorized modification; >100-year data retention meets IEC 62304 long-life requirements. |
| Automotive Telematics Module | Smart Energy Meter Firmware |
Use Scenario: Storing cellular modem firmware, GNSS calibration data, and OTA update staging area in vehicle telematics control units (TCUs) operating under automotive-grade thermal stress. IC Role / Device Role / Timing Role: Field-upgradable persistent memory supporting A/B firmware partitioning and rollback-safe updates. Use Value: 32/64 KByte block erase enables atomic firmware swaps; HOLD# pin allows host CPU to service interrupts without aborting SPI transfers. |
Use Scenario: Hosting metrology firmware, tariff tables, and encrypted event logs in ANSI C12.22-compliant smart electricity meters deployed in utility substations. IC Role / Device Role / Timing Role: High-reliability, low-power non-volatile memory for mission-critical metering code and decade-long usage history. Use Value: 100,000-cycle endurance supports daily firmware validation checks; 5 µA standby current extends battery backup life beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q32JVSSIQ | 32 Mbit, 104 MHz max clock, Quad SPI support, no AAI mode, different status register map. | Lacks AAI programming and hardware RY/BY# on SO; requires host-side address management for bulk writes. | Choose for higher bandwidth needs where Quad SPI interface is available and AAI is not required. |
| Macronix MX25L3233FZBI-10G | 32 Mbit, 104 MHz max clock, standard SPI only, 100K endurance, same 4/32/64 KB erase blocks. | Matches erase granularity and endurance but omits HOLD# pin and hardware RY/BY# configuration. | Prefer when board layout lacks HOLD# routing and software polling is acceptable for write completion detection. |
Compared with SST25VF032B-80-4I-QAE-T, W25Q32JVSSIQ offers higher speed and Quad SPI but sacrifices AAI efficiency and SO-based hardware status, while MX25L3233FZBI-10G matches core erase/write specs but removes two key system-level control features (HOLD#, configurable RY/BY#), increasing host firmware complexity.
Availability
SST25VF032B-80-4I-QAE-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, automotive telematics modules, smart energy meters, and IoT gateway firmware storage requiring stable component supply across extended product lifecycles.
Supply support for SST25VF032B-80-4I-QAE-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory solutions for embedded control applications.
The SST25VF032B-80-4I-QAE-T belongs to Microchip's SST25 serial flash family, designed specifically for cost-sensitive, space-constrained embedded systems needing robust, low-pin-count non-volatile storage with enhanced reliability and power efficiency.
FAQ
What is the maximum supported SPI clock frequency for SST25VF032B-80-4I-QAE-T?
The SST25VF032B-80-4I-QAE-T supports up to 80 MHz for High-Speed Read (0BH command), Sector/Block/Chip Erase, Byte-Program, and AAI-Word-Program operations. Standard Read (03H) is limited to 25 MHz. This 80 MHz capability enables faster firmware loading and reduces boot latency in time-critical applications using the SST25VF032B-80-4I-QAE-T.
Does SST25VF032B-80-4I-QAE-T support both SPI Mode 0 and Mode 3?
Yes, the SST25VF032B-80-4I-QAE-T explicitly supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1), as confirmed in the official datasheet. This dual-mode compatibility allows seamless integration with a broad range of microcontrollers and FPGAs without requiring clock polarity inversion logic, simplifying design reuse for the SST25VF032B-80-4I-QAE-T.
How does the HOLD# pin function on SST25VF032B-80-4I-QAE-T?
The HOLD# pin on SST25VF032B-80-4I-QAE-T suspends ongoing SPI communication without deselecting the device or resetting internal state. When asserted low during an active CE# session, it places SO in high-impedance and pauses clock sampling - allowing the host to service interrupts or perform other tasks. Communication resumes upon deasserting HOLD# while CE# remains low, preserving command context for the SST25VF032B-80-4I-QAE-T.
Can SST25VF032B-80-4I-QAE-T be used in systems requiring hardware-ready/busy signaling?
Yes - the SST25VF032B-80-4I-QAE-T supports hardware-ready/busy signaling via its SO pin when configured in AAI mode using the EBSY command (70H). Once enabled, SO outputs '0' during internal programming and '1' when ready, eliminating software polling overhead. This feature is unique to the SST25VF032B-80-4I-QAE-T among legacy 32 Mbit SPI flashes and improves deterministic timing in real-time hosts.
What write protection mechanisms does SST25VF032B-80-4I-QAE-T provide?
The SST25VF032B-80-4I-QAE-T provides three-tiered write protection: (1) Hardware WP# pin to lock status register bits, (2) Software-configurable Block-Protection bits (BP3–BP0) for memory region locking, and (3) Status register write-enable latch (WEL) requiring explicit WREN command. These layers allow secure bootloader isolation and prevent accidental firmware corruption - a critical capability implemented directly in the SST25VF032B-80-4I-QAE-T silicon.
SST25VF032B-80-4I-QAE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 32Mbit
- Memory Organization:
- 4M x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 80 MHz
- Write Cycle Time - Word, Page:
- 10µs
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON
SST25VF032B-80-4I-QAE-T FAQ
1.How can I place an order for SST25VF032B-80-4I-QAE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF032B-80-4I-QAE-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SST25VF032B-80-4I-QAE-T reliable?
The price and inventory of SST25VF032B-80-4I-QAE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25VF032B-80-4I-QAE-T is usually 5 days.
3.What payment methods are accepted for SST25VF032B-80-4I-QAE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF032B-80-4I-QAE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF032B-80-4I-QAE-T?
SST25VF032B-80-4I-QAE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF032B-80-4I-QAE-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SST25VF032B-80-4I-QAE-T?
For technical support, including SST25VF032B-80-4I-QAE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF032B-80-4I-QAE-T requirements.
6.How does Aetrix verify that SST25VF032B-80-4I-QAE-T is sourced from the original manufacturer or authorized distributors?
All SST25VF032B-80-4I-QAE-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SST25VF032B-80-4I-QAE-T meets industry standards.
7.What is the process for return or replacement of SST25VF032B-80-4I-QAE-T?
All SST25VF032B-80-4I-QAE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF032B-80-4I-QAE-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SST25VF032B-80-4I-QAE-T part is unused and in its original packaging.
Return procedure for SST25VF032B-80-4I-QAE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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